:root {
  color-scheme: light;
}
* { box-sizing: border-box; }
body {
  margin: 0;
  background: var(--bp-paper);
  color: var(--bp-ink);
  font-family: var(--ff-body);
  padding-top: var(--safe-area-inset-top, env(safe-area-inset-top, 0px));
  padding-right: var(--safe-area-inset-right, env(safe-area-inset-right, 0px));
  padding-bottom: var(--safe-area-inset-bottom, env(safe-area-inset-bottom, 0px));
  padding-left: var(--safe-area-inset-left, env(safe-area-inset-left, 0px));
}
button, input, textarea { font: inherit; }
button, summary { cursor: pointer; }
button:focus-visible, a:focus-visible, summary:focus-visible { outline: 3px solid var(--bp-blue); outline-offset: 4px; }
.topbar, main, footer { width: min(1200px, calc(100% - 64px)); margin-inline: auto; }
.topbar { min-height: 96px; display: flex; align-items: center; justify-content: space-between; border-bottom: 1px solid var(--bp-line); }
.wordmark { color: var(--bp-blue); font-family: var(--ff-display); font-size: 22px; text-decoration: none; }
.wordmark span { color: var(--bp-green-on-paper); }
.topbar > a { display: inline-flex; align-items: center; min-height: 44px; }
.topbar > a:not(.wordmark) { color: var(--bp-blue); text-decoration: none; font-size: var(--bp-fs-secondary); font-weight: 600; }
.intro { padding: 56px 0 40px; }
.eyebrow { letter-spacing: .08em; font-size: var(--bp-fs-micro); font-weight: 600; color: var(--bp-green-on-paper); }
h1, h2, p { margin-top: 0; }
h1 { font-family: var(--ff-display); font-size: clamp(36px, 4.7vw, 64px); line-height: 1.05; letter-spacing: -.045em; margin-bottom: var(--bp-space-6); }
h1 span { color: var(--bp-blue); }
.lead { color: var(--bp-ink-soft); font-size: 16px; line-height: 1.65; margin-bottom: 0; }
.constructor { display: grid; grid-template-columns: minmax(0, 1.25fr) minmax(360px, 1fr); gap: 56px; align-items: start; }
.preview { position: sticky; top: 24px; min-width: 0; }
.gift-envelope { margin: 0 16px; background: var(--bp-sheet); padding: var(--bp-space-6); border-radius: 0 0 var(--bp-radius-xl) var(--bp-radius-xl); border: 1px solid var(--bp-line); border-top: 0; }
.envelope-label { font-size: var(--bp-fs-micro); letter-spacing: .06em; color: var(--bp-muted); }
#gift-recipient { font-weight: 600; margin: 12px 0 8px; overflow-wrap: anywhere; }
#gift-note { font-size: 15px; line-height: 1.55; color: var(--bp-ink-soft); margin-bottom: 0; overflow-wrap: anywhere; white-space: pre-wrap; }
.preview-caption { font-size: 12px; color: var(--bp-ink-soft); text-align: center; margin: 16px 0 32px; }
.benefits { display: grid; grid-template-columns: repeat(3, 1fr); gap: 16px; }
.benefits > div { border-top: 1px solid var(--bp-line-strong); padding-top: 16px; }
.benefits span { display: block; font-family: var(--ff-mono); color: var(--bp-green-on-paper); font-size: 11px; margin-bottom: 12px; }
.benefits strong { font-size: 15px; }
.benefits p { color: var(--bp-ink-soft); font-size: 12px; margin: 8px 0 0; }
.controls { background: var(--bp-sheet); border: 1px solid var(--bp-line); border-radius: var(--bp-radius-xl); padding: 32px; }
fieldset { min-width: 0; border: 0; padding: 0; margin: 0 0 32px; }
legend { padding: 0; font-weight: 600; font-size: 16px; margin-bottom: var(--bp-space-6); }
legend > span { color: var(--bp-green-on-paper); font-family: var(--ff-mono); font-size: 12px; margin-right: 8px; }
.designs { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 8px; }
.design { padding: 4px; border: 2px solid transparent; background: transparent; border-radius: var(--bp-radius); color: var(--bp-ink); }
.design[aria-pressed="true"] { border-color: var(--bp-green-on-paper); background: var(--bp-green-tint); }
.design img { width: 100%; height: auto; aspect-ratio: 3 / 2; object-fit: cover; display: block; border-radius: var(--bp-radius-xs); }
.design span { display: block; margin: 8px 0 4px; font-size: 11px; }
.design-special { position: relative; display: flex; align-items: center; gap: var(--bp-space-6); width: 100%; margin-top: var(--bp-space-6); padding: var(--bp-space-4); text-align: left; border-color: var(--bp-blue); background: var(--bp-blue-ink); color: var(--bp-paper); }
.design-special[aria-pressed="true"] { border-color: var(--bp-green); background: var(--bp-blue-ink); }
.design-special img { width: 40%; flex: 0 0 40%; }
.design-special .design-special-copy { margin: 0; min-width: 0; }
.design-special .design-special-badge { width: fit-content; margin: 0 0 var(--bp-space-3); padding: var(--bp-space-1) var(--bp-space-2); border-radius: var(--bp-radius-xs); background: var(--bp-green-tint); color: var(--bp-green-on-paper); font-size: 10px; }
.design-special strong { display: block; font-size: var(--bp-fs-body); line-height: 1.3; }
.design-special .design-special-check { position: absolute; top: var(--bp-space-2); right: var(--bp-space-2); display: none; margin: 0; color: var(--bp-green); font-size: 18px; }
.design-special[aria-pressed="true"] .design-special-check { display: block; }
.amounts { display: grid; grid-template-columns: repeat(3, 1fr); gap: 8px; }
.amount { min-height: 48px; padding: 8px 4px; border: 1px solid var(--bp-line); border-radius: var(--bp-radius); background: var(--bp-sheet); color: var(--bp-ink); font-weight: 600; font-size: var(--bp-fs-body); }
.amount[aria-pressed="true"] { background: var(--bp-blue); color: var(--bp-sheet); border-color: var(--bp-blue); }
.amount-custom { grid-column: 1 / -1; }
#gift-custom { margin-top: var(--bp-space-4); }
.hint { color: var(--bp-ink-soft); font-size: 12px; line-height: 1.5; margin: 12px 0 0; }
label { display: block; font-size: 13px; margin: 0 0 8px; }
label span { color: var(--bp-muted); margin-left: 4px; font-size: 11px; }
input, textarea { display: block; width: 100%; border: 1px solid var(--bp-line); border-radius: var(--bp-radius); background: var(--bp-paper); padding: 16px; color: var(--bp-ink); font-size: var(--bp-fs-input); }
input { min-height: 48px; margin-bottom: var(--bp-space-6); }
textarea { resize: vertical; line-height: 1.5; min-height: 100px; }
input:focus, textarea:focus { outline: 2px solid var(--bp-blue); outline-offset: 2px; }
.counter { text-align: right; font-size: 11px; color: var(--bp-muted); margin-top: 8px; }
.checkout { border-top: 1px solid var(--bp-line); padding-top: 24px; }
.total { display: flex; justify-content: space-between; align-items: center; margin-bottom: var(--bp-space-6); gap: 16px; }
.total > span { color: var(--bp-ink-soft); font-size: 14px; }
.total strong { font-family: var(--ff-display); font-size: 28px; white-space: nowrap; }
.pay-button { width: 100%; display: flex; align-items: center; justify-content: space-between; min-height: 56px; border: 0; border-radius: var(--bp-radius); background: var(--bp-green-on-paper); color: var(--bp-sheet); font-weight: 600; font-size: var(--bp-fs-input); padding: 16px 24px; }
.pay-button > span { font-size: 24px; line-height: 1; }
@media (hover: hover) and (pointer: fine) { .pay-button:hover { background: var(--bp-green-dark); } }
.checkout-hint { text-align: center; font-size: 11px; color: var(--bp-ink-soft); margin: 12px 0 0; line-height: 1.5; }
footer { border-top: 1px solid var(--bp-line); padding: 24px 0 32px; display: flex; justify-content: space-between; gap: 24px; font-family: var(--ff-display); font-size: 13px; }
footer span { font-family: var(--ff-body); color: var(--bp-ink-soft); font-size: 12px; }
@media (max-width: 900px) {
  .topbar, main, footer { width: min(620px, calc(100% - 32px)); }
  .topbar { min-height: 72px; }
  .constructor { grid-template-columns: minmax(0, 1fr); gap: 24px; }
  .preview { position: static; }
  .benefits { display: none; }
  .preview-caption { margin-bottom: 0; }
  .controls { padding: 24px; }
  .intro { padding-top: 40px; }
}
@media (max-width: 380px) {
  .wordmark { font-size: 18px; }
  .controls { padding: var(--bp-space-6) 16px; }
  .gift-envelope { padding: var(--bp-space-6); margin-inline: 8px; }
}
.gift-back { display: inline-flex; align-items: center; min-height: 44px; color: var(--bp-blue); font-size: var(--bp-fs-secondary); }
.gift-back[hidden] { display: none; }
.gift-error { padding: 16px; border-radius: var(--bp-radius); background: var(--bp-red-tint); color: var(--bp-stamp-red); line-height: 1.5; margin-top: 16px; }
.pay-button:disabled { opacity: .6; cursor: wait; }
.gift-conditions { font-size: 12px; color: var(--bp-ink-soft); line-height: 1.65; padding-left: 18px; }
.gift-conditions a { color: var(--bp-blue); }